package pattern.builder;

public class NutritionFacts {

  // Parameters initialized to default values (if any)
  private int servingSize;
  private int servings;
  private int calories;
  private int fat;
  private int sodium;
  private int carbohydrate;

  public static class Builder {

    private final int servingSize;
    private final int servings;
    private int calories = 0;
    private int fat = 0;
    private int sodium = 0;
    private int carbohydrate = 0;

    public Builder(int servingSize, int servings) {
      this.servingSize = servingSize;
      this.servings = servings;
    }

    public Builder calories(int val) {
      calories = val;
      return this;
    }

    public Builder fat(int val) {
      fat = val;
      return this;
    }

    public Builder sodium(int val) {
      sodium = val;
      return this;
    }

    public Builder carbohydrate(int val) {
      carbohydrate = val;
      return this;
    }

    public NutritionFacts build() {
      return new NutritionFacts(this);
    }
  }

  private NutritionFacts(Builder builder) {
    servingSize = builder.servingSize;
    servings = builder.servings;
    calories = builder.calories;
    fat = builder.fat;
    sodium = builder.sodium;
    carbohydrate = builder.carbohydrate;
  }

  public static void main(String[] args) {
    NutritionFacts cocaCola = new NutritionFacts.Builder(20, 20).calories(1).fat(2).sodium(3).carbohydrate(4).build();
  }
}
